71503552149 has 8 divisors (see below), whose sum is σ = 95399229120. Its totient is φ = 47638454976.

The previous prime is 71503552147. The next prime is 71503552193. The reversal of 71503552149 is 94125530517.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71503552149 - 2¹ = 71503552147 is a prime.

It is a super-2 number, since 2×71503552149² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71503552149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71503552147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7639492 + ... + 7648845.

It is an arithmetic number, because the mean of its divisors is an integer number (11924903640).

Almost surely, 2^71503552149 is an apocalyptic number.

It is an amenable number.

71503552149 is a deficient number, since it is larger than the sum of its proper divisors (23895676971).

71503552149 is a wasteful number, since it uses less digits than its factorization.

71503552149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15289899.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 71503552149 in words is "seventy-one billion, five hundred three million, five hundred fifty-two thousand, one hundred forty-nine".